The Conversation: Who Is Behind Iran's Protest Videos?

Mehdi Saharkhiz and Diane

Pro-government and opposition supporters took to the streets of Iran today to mark the 31st anniversary of the Islamic revolution. Television broadcasts showed mostly peaceful demonstrations in support of the Iranian government and President Mahmoud Ahmadinejad.

But there is another side to this story, one being played out in viral videos captured in secret on the streets of Iran. They show men and women taking to the streets and subways, protesting against the regime. Over the past year, the government has done its best to keep these shocking and often violent videos off the Internet.

And so it has become the job of underground video distributors such as Mehdi Saharkhiz to get the videos out to the public through sites like Twitter and YouTube.

In today's Conversation, Diane Sawyer talks with Saharkhiz about how he became the one of the main sources of secret videos from Iran. The people shooting and sending these videos are risking their lives, and trusting people elsewhere to make the effort count.

Mehdi Saharkhiz and Diane SawyerPlay

Saharkhiz talks about the video from today's protests, showing us some of his most powerful clips and explaining why this cause is so close to his heart.

All this and more in today's Conversation.